Air feeding and heating device for lamps.



, No. 685,791. Patented-Nov. 5, l90l.

' W. H. PAYNE.

AIR FEEDING AND HEATING DEVICE FOR LAMPS.

[Application filed Aug. 15, 1900.)

(No Model.)

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[UNITED STATES PATENT OFFICE,

WILLIAM H. PAYNE, o oAMDEN, NEW JERSEY.

AIR FEEDING AND HEATING DEVICE FOR LAMPS.

, SPEGIEICATION forming part of Letters latent No. 685,791, datedNovember 5, 1901.

" Application filed August 15, 1900- Serial No. 26,908. (No model.)

To aZZiuh-om it may concern:

Be it known that 1, WILLIAM H. PAYNE, a citizen of the United States,residing at Camden, in the county of Camden and State of New Jersey,have. invented certain new and useful Improvements in Air Feeding andHeating Devices for Lamps, of which the followingis a specification.

i My invention has relation to an air feeding and heating device forlamps, whether gas, vapor, or hydrocarbon, and of the type known assuspended lamps, in which the light is thrown downward through a bowl orglobe inclosing the burner.

The principal object of my invention is to provide in a lamp having aglobe or bowl through which the light is thrown downward and in whichthe burner and flame are inclosed by said globe or bowl, said globe orbowl having an opening in its wall for the ad mission of air, an airfeeding and heating device comprising a plate formed of transparent ortranslucent material of greater diameter than the diameter of theopening in the globe, said plate locatedwithin said globe adjacent tothe burner and flame and above the opening in the globe, whereby the airpassing through the opening is deflected around the wall of the globeprior to its presentation to the burner and flame.

My invention, stated in general terms, consists of an air feeding andheating device for' suspended gas, vapor, or hydrocarbon incandescentlamps when constructed and arranged in substantially the mannerhereinafter described and claimed.

The nature, scope, and characteristic features of my invention will bemore fully understood from the following description, taken inconnection with the accompanying drawings, forming part hereof, inwhich.

Figure l is a front elevational View of a gas, hydrocarbon, or vaporburning incandescent lamp embodying in its construction the particularfeatures of my present invention. Fig. 2 is a View, partly in enlargedelevation'and central section, of the burners and the air feeding andheating device arranged adjacent to said burners, a portion of the sur-'rounding globe or bowl for the burners of the lamp being alsoillustrated in section. Fig. 3 is a top or plan view of the air feedingand heating device, and Fig. 4 is an under neath plan View of the airfeeding and heating device removed from the bowlor globe of the lamp.

Referring to the drawings, A represents a portion of a Well-known typeof suspended gas, hydrocarbon, or vapor burning lamp providedwithburners a and a, which in the form of lamp illustrated in the drawingsare arranged to heat a mantle of refractory material to incandescence.The light issuing from the burners of the lamp is projected downwardthrough a glass bowl or globe B. The bowl or globe B is provided in thebottom with a throat or opening I) for the entrance of air.

O is the air feeding and heating device of my invention, preferablyconsisting of a dishshape' plate 0 of glass, mica, or other translucentor transparent material and of a diameter larger than the diameter ofthe opening or throat I). This plate '0 is preferably provided at ornear its periphery with a perforated ring 0' and with preferably twoconcentric perforated rings or tubes 0 and c suitably connected with theplate 0 and projecting downward therefrom. The central ring or tube 0 isadapted to engage and fit snugly in the throat or opening I) of the bowlor globe B to support the plate 0 within the bowl B and above theopening in said bowl or globe, as clearly illustrated in Figs. 1 and"2,whereby when the plate 0, with the perforated rings a, c ,'and 0 isarranged as illustrated in Figs. 1 and 2 the air from without the lampis sucked in through the throat or opening I) through the centralperforated ring or ings of the latter ring around the Wall of the globeor bowl, and is then presented to the burner or burners, thus supplyingto the gas or vapors issuing from the respective burners 0t and a heatedair to support combustion and to enhance the illumination derived fromthe burners. The constant supply of air by deflection from the plate ato the inside of the bowl or globe lessens the tendency of the latter tocrack or break, because undue expansion by heat from the burners of thebowl or globe is prevented.

The device of my invention is preferably maintained firmly in positionby the engagement of the outer perforated ring a with the bottom of thebowl or glass globe B and of the central ring or perforated tube 0 withthe throat or opening I) of the said globe or bowl surrounding theburners of the lamp. The plate a, being of either a transparent ortranslucent material, will not perceptibly obstruct the passage of lightthrough the bowl or globe B. Theair in its cool state enters from theexterior of the bowl through the throat I) and is deflected and heatedprior to its presentation to the burners by the plate 0 of the device.

Having thus described the nature and object of my invention, what Iclaim as new, and desire to secure by Letters Patent, is

1. In a lamp provided with a depending globe or bowl inclosing theburner and flame and having an opening in its wall below the burner, anair feeding and heatingdevice located wholly within the globe 01- bowland comprising a transparent or translucent plate having a perforateddownwardly-projecting rim interposed between the burner and theopeningvin the globe or bowl, and means for supporting the plate and rimabove said opening, substantially as and for the purposes described.

2. In a lamp provided with a depending globe inclosing the burner,an airfeeding and ing witnesses.

Y WILLIAM H. PAYNE. Witnesses: i

J. WALTER DOUGLASS, THOMAS M. SMITH.

